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CVE-2011-2705

UnknownEPSS 1.95%

Last modified

CVE-2011-2705 is a vulnerability of currently unknown severity. The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.. EPSS estimates a 1.95% chance of exploitation in the next 30 days.

Description

The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.

Metrics

EPSS Probability
1.95%

77.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Ruby-LangRuby<= 1.8.7-334—
Ruby-LangRuby1.8.7P22
Ruby-LangRuby1.8.7-160—
Ruby-LangRuby1.8.7-173—
Ruby-LangRuby1.8.7-248—
Ruby-LangRuby1.8.7-249—
Ruby-LangRuby1.8.7-299—
Ruby-LangRuby1.8.7-302—
Ruby-LangRuby1.8.7-330—
Ruby-LangRuby1.8.7-p21—
Ruby-LangRuby1.9—
Ruby-LangRuby1.9.0—
Ruby-LangRuby1.9.0-0—
Ruby-LangRuby1.9.0-1—
Ruby-LangRuby1.9.0-2—
Ruby-LangRuby1.9.0-20060415—
Ruby-LangRuby1.9.0-20070709—
Ruby-LangRuby1.9.1—
Ruby-LangRuby1.9.2—
Ruby-LangRuby1.9.2-p136—
Ruby-LangRuby1.9.2-p180—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-2705?
The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.
How severe is CVE-2011-2705?
Severity scoring for CVE-2011-2705 is pending analysis. The EPSS model estimates a 1.95% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2705?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2705?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST